%
%%%USAGE
% In the \score section do:
-% \unfoldRepeats \articulate <<
+% \articulate <<
% all the rest of the score
% >>
% or use the lilywrap script.
% * Add Mordents (reported by Patrick Karl)
%
-\version "2.16.0"
+\version "2.17.11"
+#(use-modules (srfi srfi-1))
+#(use-modules (srfi srfi-11))
#(use-modules (ice-9 debug))
#(use-modules (scm display-lily))
% How much to slow down for a rall. or a poco rall.
% (or speed up for accel or poco accel)
-#(define ac:rallFactor (ly:make-moment 60 100)) % 40% slowdown
-#(define ac:pocoRallFactor (ly:make-moment 90 100)) % 10% slowdown
+#(define ac:rallFactor (ly:make-moment 60/100)) % 40% slowdown
+#(define ac:pocoRallFactor (ly:make-moment 90/100)) % 10% slowdown
% The absolute time for a twiddle in a trill, in minutes.
% Start with 1/4 seconds == 1/240 minutes
-#(define ac:maxTwiddleTime (ly:make-moment 1 240))
+#(define ac:maxTwiddleTime (ly:make-moment 1/240))
+
+% How long ordinary grace notes should be relative to their notated
+% duration. 9/40 is LilyPond's built-in behaviour for MIDI output
+% (though the notation reference says 1/4).
+#(define ac:defaultGraceFactor 9/40)
+
+% What proportion of an ordinary grace note's time should be stolen
+% from preceding notes (as opposed to stealing from the principal note).
+% Composers' intentions for this vary. Taking all from the preceding
+% notes is LilyPond's built-in behaviour for MIDI output.
+#(define ac:defaultGraceBackwardness 1)
% Internal variables, don't touch.
(cons 6 0))))
-#(define ac:currentTempo (ly:make-moment 15 1)) % 4 = 60, measured wholes per minute
+#(define ac:currentTempo (ly:make-moment 15/1)) % 4 = 60, measured wholes per minute
#(define ac:lastTempo ac:currentTempo) % for 'a tempo' or 'tempo I'
% The duration of the current note. Start at a crotchet
% for no good reason.
-#(define ac:currentDuration (ly:make-duration 2 0 1 1))
+#(define ac:currentDuration (ly:make-duration 2 0 1/1))
+
+% Amount of musical time (in whole notes) that we need to steal from the
+% next events seen.
+#(define ac:stealForward 0)
+
+% List of events in the output so far, in reverse order, from which we can
+% steal time.
+#(define ac:eventsBackward '())
+
+% Log events for the backward chain.
+#(define (ac:logEventsBackward music)
+ (music-map
+ (lambda (m)
+ (case (ly:music-property m 'name)
+ ((EventChord)
+ (set! ac:eventsBackward (cons m ac:eventsBackward))
+ m)
+ ((BarCheck SkipMusic)
+ (let ((wm (make-sequential-music (list m))))
+ (set! ac:eventsBackward (cons wm ac:eventsBackward))
+ wm))
+ (else
+ m)))
+ music))
+
+% Steal time from the backward chain. Adds to ac:stealForward (with a
+% warning) if it couldn't backward-steal all that was desired.
+#(define (ac:stealTimeBackward tosteal)
+ (if (<= tosteal 0)
+ #t
+ (if (null? ac:eventsBackward)
+ (begin
+ (ly:warning (_ "articulation failed to steal ~a note backward at beginning of music; stealing forward instead") tosteal)
+ (set! ac:stealForward (+ ac:stealForward tosteal)))
+ (let*
+ ((lastev (car ac:eventsBackward))
+ (levlen (ly:moment-main (ly:music-length lastev))))
+ (if (< tosteal levlen)
+ (begin
+ (ly:music-compress lastev (ly:make-moment (/ (- levlen tosteal) levlen)))
+ #t)
+ (begin
+ (if (any (lambda (z) (eq? 'NoteEvent (ly:music-property z 'name)))
+ (ly:music-property lastev 'elements))
+ (ly:warning (_ "stealing the entirety of a note's time")))
+ (set! (ly:music-property lastev 'elements) '())
+ (set! ac:eventsBackward (cdr ac:eventsBackward))
+ (ac:stealTimeBackward (- tosteal levlen))))))))
% Debugging: display a moment plus some text.
% Returns its moment argument so can be used in-line.
pre-t
(let loop ((len (ly:music-length music)))
(if (ly:moment<? t len)
- (loop (ly:moment-mul len (ly:make-moment 1 2)))
+ (loop (ly:moment-mul len (ly:make-moment 1/2)))
len)))))
#(define (ac:trill music)
" Replace music with time-compressed repeats of the music,
maybe accelerating if the length is longer than a crotchet "
- (let* ((hemisemidur (ly:make-duration 5 0 1 1))
+ (let* ((hemisemidur (ly:make-duration 5 0 1/1))
(orig-len (ly:music-length music))
(t (ac:twiddletime music))
(uppernote '())
- (note_moment (ly:moment-mul t (ly:make-moment 1 2)))
+ (note_moment (ly:moment-mul t (ly:make-moment 1/2)))
(c1 (ly:moment-div orig-len note_moment))
(c2 (inexact->exact
(round (/ (ly:moment-main-numerator c1)
'metronome-count
tempo
'tempo-unit
- (ly:make-duration 0 0 1 1))
+ (ly:make-duration 0 0 1/1))
(context-spec-music
(make-property-set 'tempoWholesPerMinute tempo) 'Score))))
+%
+% Totally unfold repeats, so that the non-obvious sequencing doesn't
+% confuse us. This is necessary for time stealing to work, because
+% that relies on the sequence in which we see events matching their
+% audible sequence. Also unfold multi-measure rests to equivalent
+% skips, with preceding and following bar checks, so that time stealing
+% can change the length of the pause without falling foul of the
+% implicit bar checks.
+%
+#(define (ac:unfoldMusic music)
+ (music-map
+ (lambda (m)
+ (case (ly:music-property m 'name)
+ ((UnfoldedRepeatedMusic)
+ (let
+ ((body (ly:music-property m 'element))
+ (altl (ly:music-property m 'elements))
+ (rc (ly:music-property m 'repeat-count)))
+ (if (null? altl)
+ (make-sequential-music
+ (list-tabulate rc (lambda (i) (ly:music-deep-copy body))))
+ (let ((ealtl (if (> (length altl) rc) (take altl rc) altl)))
+ (make-sequential-music
+ (apply append!
+ (append!
+ (list-tabulate
+ (- rc (length ealtl))
+ (lambda (i) (list (ly:music-deep-copy body) (ly:music-deep-copy (car ealtl)))))
+ (map (lambda (alt) (list (ly:music-deep-copy body) alt)) ealtl))))))))
+ ((EventChord)
+ (let-values
+ (((trem evl)
+ (partition (lambda (v) (eq? (ly:music-property v 'name) 'TremoloEvent))
+ (ly:music-property m 'elements))))
+ (if (null? trem)
+ m
+ (let*
+ ((tremtype (ly:music-property (car trem) 'tremolo-type))
+ (tremtype-log (1- (integer-length tremtype)))
+ (durev (find (lambda (v) (not (null? (ly:music-property v 'duration)))) evl))
+ (totaldur (if durev (ly:music-property durev 'duration) (ly:make-duration tremtype-log 0 1)))
+ (tgt-nrep (/ (duration-visual-length totaldur) (duration-log-factor tremtype-log)))
+ (eff-nrep (max (truncate tgt-nrep) 1))
+ (tremdur (ly:make-duration tremtype-log 0
+ (* (/ tgt-nrep eff-nrep) (ly:duration-scale totaldur)))))
+ (or (and (= eff-nrep tgt-nrep) (= (ash 1 tremtype-log) tremtype))
+ (ly:warning (_ "non-integer tremolo ~a:~a")
+ (duration->lily-string (duration-visual totaldur) #:force-duration #t #:time-scale 1)
+ tremtype))
+ (for-each
+ (lambda (v)
+ (or (null? (ly:music-property v 'duration))
+ (set! (ly:music-property v 'duration) tremdur)))
+ evl)
+ (set! (ly:music-property m 'elements) evl)
+ (make-sequential-music
+ (list-tabulate eff-nrep (lambda (i) (ly:music-deep-copy m))))))))
+ ((MultiMeasureRestMusic)
+ (make-sequential-music
+ (list
+ (make-music 'BarCheck)
+ (make-music 'SkipMusic 'duration (ly:music-property m 'duration))
+ (make-music 'BarCheck))))
+ (else
+ m)))
+ (unfold-repeats music)))
+
% If there's an articulation, use it.
% If in a slur, use (1 . 1) instead.
% Treat phrasing slurs as slurs, but allow explicit articulation.
(if (null? es)
(begin
(set! (ly:music-property music 'elements) (reverse newelements))
- (cond
- (ac:inTrill (cons 'trill actions))
- ((and (eq? factor ac:normalFactor) (or ac:inSlur ac:inPhrasingSlur))
- (append actions (list 'articulation '(1 . 1)) ))
- (else (append actions (list 'articulation factor)))))
+ (if
+ (not (any (lambda (m) (music-is-of-type? m 'rhythmic-event))
+ newelements))
+ actions
+ (append
+ (let ((st ac:stealForward))
+ (if (= st 0)
+ '()
+ (begin
+ (set! ac:stealForward 0)
+ (list 'steal st))))
+ actions
+ (cond
+ (ac:inTrill '(trill))
+ ((and (eq? factor ac:normalFactor) (or ac:inSlur ac:inPhrasingSlur))
+ (list 'articulation '(1 . 1)))
+ (else (list 'articulation factor))))))
; else part
(let ((e (car es))
(tail (cdr es)))
#(define (ac:articulate-chord music)
- (begin
- (cond
-
- ((eq? 'EventChord (ly:music-property music 'name))
+ (cond
+ ((eq? 'EventChord (ly:music-property music 'name))
+ (ac:logEventsBackward
(let loop ((actions (ac:getactions music)))
(if (null? actions)
- (if (ly:moment> (ly:music-length music) (make-moment 1 4))
+ (if (ly:moment<? (ly:make-moment 1/4) (ly:music-length music))
(ac:to128 music)
music)
; We implement as a half-shake.
(let*
((totallength (ly:music-length music))
- (newlen (ly:moment-sub totallength (ly:make-moment 3 32)))
+ (newlen (ly:moment-sub totallength (ly:make-moment 3/32)))
(newdur (ly:make-duration
0 0
(ly:moment-main-numerator newlen)
(ly:moment-main-denominator newlen)))
- (gracedur (ly:make-duration 5 0 1 1))
+ (gracedur (ly:make-duration 5 0 1/1))
(gracenote (ly:music-deep-copy music))
(abovenote (ly:music-deep-copy music))
(mainnote (ly:music-deep-copy music))
((totaldur (ly:music-property
(car (ly:music-property music 'elements)) 'duration))
(dur (ly:duration-length totaldur))
- (newlen (ly:moment-sub dur (ly:make-moment 2 32)))
+ (newlen (ly:moment-sub dur (ly:make-moment 2/32)))
(newdur (ly:make-duration
0 0
(ly:moment-main-numerator newlen)
(music-map (lambda (n)
(if (eq? 'NoteEvent (ly:music-property n 'name))
(set! (ly:music-property n 'duration)
- (ly:make-duration 5 0 1 1)))
+ (ly:make-duration 5 0 1/1)))
n)
mordent)
(music-map (lambda (n)
(lambda (z) (eq? 'NoteEvent (ly:music-property z 'name)))
(ly:music-property above 'elements)))
newmusic)))))
- ))))
+ ((steal)
+ (let
+ ((totallen (ly:moment-main (ly:music-length music)))
+ (steallen (cadr actions)))
+ (if (>= steallen totallen)
+ (begin
+ (if (any (lambda (z) (eq? 'NoteEvent (ly:music-property z 'name)))
+ (ly:music-property music 'elements))
+ (ly:warning (_ "stealing the entirety of a note's time")))
+ (set! ac:stealForward (- steallen totallen))
+ (make-sequential-music '()))
+ (begin
+ (ly:music-compress music (ly:make-moment (/ (- totallen steallen) totallen)))
+ (loop (cddr actions))))))
+ )))))
+
+ ((eq? 'GraceMusic (ly:music-property music 'name))
+ (let
+ ((first-ev
+ (call-with-current-continuation
+ (lambda (yield-fev)
+ (music-map
+ (lambda (m)
+ (if (eq? 'EventChord (ly:music-property m 'name))
+ (yield-fev m)
+ m))
+ music)
+ #f))))
+ (if first-ev
+ (let ((fev-pos (find-tail (lambda (m) (eq? m first-ev)) ac:eventsBackward)))
+ (if fev-pos
+ (set! ac:eventsBackward (cdr fev-pos))
+ (ly:warning (_ "articulation of grace notes has gone awry"))))))
+ (let*
+ ((gmus (ly:music-compress (ly:music-property music 'element)
+ (ly:make-moment ac:defaultGraceFactor)))
+ (glen (ly:moment-main (ly:music-length gmus))))
+ (ac:stealTimeBackward (* glen ac:defaultGraceBackwardness))
+ (set! ac:stealForward (+ ac:stealForward (* glen (- 1 ac:defaultGraceBackwardness))))
+ gmus))
+
+ ((memq (ly:music-property music 'name) '(BarCheck SkipMusic))
+ (let ((totallen (ly:moment-main (ly:music-length music)))
+ (steallen ac:stealForward))
+ (cond
+ ((= steallen 0)
+ (ac:logEventsBackward music))
+ ((< steallen totallen)
+ (set! ac:stealForward 0)
+ (ac:logEventsBackward
+ (ly:music-compress music (ly:make-moment (/ (- totallen steallen) totallen)))))
+ (else
+ (set! ac:stealForward (- steallen totallen))
+ (make-sequential-music '())))))
- ((eq? 'KeyChangeEvent (ly:music-property music 'name))
- (set! ac:current-key music)
- music
- )
+ ((eq? 'KeyChangeEvent (ly:music-property music 'name))
+ (set! ac:current-key music)
+ music)
- ((eq? 'PropertySet (ly:music-property music 'name))
- (ac:adjust-props (ly:music-property music 'symbol) music)
- music)
+ ((eq? 'PropertySet (ly:music-property music 'name))
+ (ac:adjust-props (ly:music-property music 'symbol) music)
+ music)
- (else music))
- ))
+ (else music)))
"Adjust times of note to add tenuto, staccato and
normal articulations.
"
- (set! music (event-chord-wrap! music parser))
- (music-map ac:articulate-chord music)
- )
+ (dynamic-wind
+ (lambda ()
+ (set! ac:stealForward 0)
+ (set! ac:eventsBackward '()))
+ (lambda ()
+ (music-map
+ ac:articulate-chord
+ (ac:unfoldMusic (event-chord-wrap! music parser))))
+ (lambda ()
+ (or (= ac:stealForward 0)
+ (begin
+ (ly:warning (_ "articulation failed to steal ~a note at end of music") ac:stealForward)
+ (set! ac:stealForward 0)))
+ (set! ac:eventsBackward '()))))
% Override \afterGrace to be in terms of audio, not spacing.
(main-orig-len (ly:music-length main))
(numerator (ly:moment-main-numerator maindur))
(factor (if (eq? (remainder numerator 3) 0)
- (ly:make-moment 1 3) (ly:make-moment 1 2))))
+ (ly:make-moment 1/3) (ly:make-moment 1/2))))
(ly:music-compress grace
(ly:moment-mul factor (ly:moment-div main-orig-len grace-orig-len)))
- (ly:music-compress main (ly:moment-sub (ly:make-moment 1 1) factor))
+ (ly:music-compress main (ly:moment-sub (ly:make-moment 1/1) factor))
(set! (ly:music-property grace 'elements)
(append (ly:music-property grace 'elements)
projects / lilypond.git / blobdiff